/*
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 * and open the template in the editor.
 */
package servlet;

import ejb.BusinessLogicLocal;
import entity.Utente;
import java.io.IOException;
import java.util.List;
import javax.ejb.EJB;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Marco
 */
public class ServletLogin extends HttpServlet {

    @EJB
    private BusinessLogicLocal businessLogic;

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        HttpSession session = request.getSession();
        String user = request.getParameter("username");
        String password = request.getParameter("password");

        String hashedpasswd = businessLogic.Cripta(password);
        
        List<Utente> result = businessLogic.checkLogin(user, hashedpasswd);
        
        if (!result.isEmpty()) {
            //login avvenuta con successo
            Utente u = result.get(0);
            if (u.getFlag() != -1) {
                session.setAttribute("nomeUtente", u.getNomeUtente());
                session.setAttribute("flag", u.getFlag());
                session.setAttribute("verificato", "true");
                RequestDispatcher rdRegistrazione = getServletContext().getRequestDispatcher("/homepage.jsp");
                rdRegistrazione.forward(request, response);
            } else {
                RequestDispatcher rdRegistrazione = getServletContext().getRequestDispatcher("/erroreverificautente.jsp");
                rdRegistrazione.forward(request, response);
            }
        } else {
            //nome utente o password errati
            RequestDispatcher rdRegistrazione = getServletContext().getRequestDispatcher("/errorelogin.jsp");
            rdRegistrazione.forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
